The 25-year-old will sit out Arsenal's Champions League home game against Basel on Wednesday and Sunday's English Premier League trip to Burnley, but Wenger will hope to have him available again for the visit of Swansea on October 15, after the international break.

"He is out for the game tomorrow, but it should be a short-term injury because the scan was quite positive and I think it will be three weeks out," Wenger said in a statement on Arsenal's website.

Wenger also said that striker Oliver Giroud may miss the contest against Burnley with a toe injury.

"He is not available (for game against Basel), he is suspended because he was sent off at PSG. He is a doubt for Sunday, we will see," Wenger said.